Mazda CX-5 Service & Repair Manual: Camshaft Position (CMP) Sensor Inspection

Mazda CX-5 Service & Repair Manual / Engine / Engine Assembly / Valvetrain, Cylinder Head / Camshaft Position (CMP) Sensor Inspection

Intake CMP Sensor

Visual inspection

CAUTION:

When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.

1. Remove the intake CMP sensor..

2. Verify that there are no metal shavings on the intake CMP sensor.

If there is a malfunction, remove any metal shavings that are adhering.

Voltage inspection

CAUTION:

When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.
If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

1. Idle the engine.

2. Measure the intake CMP sensor output voltage using the oscilloscope.

If not as specified, replace the intake CMP sensor..


Terminal	Voltage (V)	Condition
A	Above 4.8	High output*
A	Below 0.8	Low output*
B	Below 1.0	Under any condition
C	B+	Under any condition

* Output voltage varies with camshaft rotation.

Exhaust CMP Sensor

Visual inspection

CAUTION:

When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.

1. Remove the exhaust CMP sensor..

2. Verify that there are no metal shavings on the exhaust CMP sensor.

If there is a malfunction, remove any metal shavings that are adhering.

Voltage inspection

CAUTION:

When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.
If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

1. Idle the engine.

2. Measure the exhaust CMP sensor output voltage using the oscilloscope.

If not as specified, replace the exhaust CMP sensor..


Terminal	Voltage (V)	Condition
A	Above 4.8	High output*
A	Below 0.8	Low output*
B	Below 1.0	Under any condition
C	B+	Under any condition

* Output voltage varies with camshaft rotation.

Valvetrain, Cylinder Head

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Camshaft Position (CMP) Sensor Removal/Installation

CAUTION: When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfu ...

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